Abstract: Digital convergence correction system for correcting misconvergence on a screen of a multi-mode projection television, including a first memory part for storing adjustment point data for every mode of multi-modes, a second memory part for storing convergence correction data in accordance with the adjustment point data, a control part for producing the convergence correction data using the adjustment point data stored in the first memory part for writing the convergence correction data on the second memory part and outputting the convergence correction data stored in the second memory part, and a time sharing processing unit for controlling the control part to share time in producing the convergence correction data and renewing convergence correction data in the second memory part and outputting the convergence correction data stored already in the second memory part for preventing overlap of the producing and storing time and the outputting time.

Abstract: A thin film transistor and method includes a substrate and a first semiconductor layer formed on the substrate. A first insulating layer is formed on the first semiconductor layer, and a doped semiconductor layer is formed on an upper portion of the first semiconductor layer at first and second sides of the first insulating layer. A second insulating layer is formed on the first insulating layer and the doped semiconductor layer, the second insulating layer having contact holes. A gate electrode is formed on a portion of the second insulating layer, and source and drain electrodes are formed on portions of the second insulating layer, the source and drain electrodes contacting the doped semiconductor layer through the contact holes, respectively.

Abstract: A microwave choke apparatus for a microwave oven includes an inner door panel having a plurality of multi-pronged and double-stepped portions extended outwardly therefrom, between which multi-pronged and double-stepped toothed portions there are alternately formed a plurality of slots, an outer door panel having an upwardly bent portion at an outer periphery thereof, and a choke cover for closing an opening formed between an inner side of the bent portion of the outer door panel and respective outer flat portions of the multi-pronged and double-stepped toothed portions of the inner door panel. The apparatus effectively prevents microwaves from leaking externally through a gap between a door frame and a front panel of the microwave oven by broadening a bandwidth of a choke resonant frequency of a choke channel.

Abstract: A recording/reproducing system of a DVCR for detecting an error resulting from a noise or system instability caused by a reproducing process, and correcting the error under correctable conditions converts input digital data into an INRZI signal via a precoder to record the INRZI signal which is restored via a PR4 equalizer and a PR4 detector. The system includes an error detecting/correcting part for detecting occurrence of an error by using a peak waveform and (-) peak waveform from the PR4 detector, an approximate signal of a precoder output detected from an output of the PR4 equalizer, and a peak waveform from the PR4 detector to check whether they correspond to regular rules of a channel modeling process, and correcting the error in case of producing under correctable conditions.

Abstract: A linear motor magnet assembly which is capable of facilitating the assemblage and enhancing the reliability thereof by attaching magnets on a cylindrical magnet shell to form a magnet assembly, and which includes the cylindrical magnet shell, and a plurality of magnets attached on a peripheral surface of the magnet shell.

Abstract: A liquid crystal display unit includes a substrate; a gate electrode formed on the substrate; a gate insulating layer formed on the exposed surface of the substrate including the gate electrode; an intrinsic semiconductor layer and an impurity layer formed on the gate insulating layer; source and drain electrodes separately formed on the impurity semiconductor layer; an insulating layer formed on the source and drain electrodes, the insulating layer having a contact hole for exposing a channel region; and a pixel electrode formed on the insulating layer and connected to the drain electrode.

Abstract: A multi-output circuit for projection TV lamp is disclosed including a DC/DC-voltage converter, a voltage dividing portion, a driving pulse generator for generating a driving pulse, a lamp driving portion for switching the output voltage of the DC/DC-voltage converter, a voltage feeding-back portion for comparing the output voltage of the voltage dividing portion with a reference voltage, a current feeding-back portion for comparing the driving current supplied to the lamp with the reference voltage, a current detecting portion for detecting the driving current supplied to the lamp, an error amplifying portion for comparing the output voltage output from the current detecting portion, a gain controller for summing the output voltages of the voltage feeding-back portion and current feeding-back portion, and a pulse-width modulation integrated device for outputting a pulse-width modulation signal to the DC/DC-voltage converter.

Abstract: A method and apparatus for recording and playing back computer graphics data, including cursor movement data, and audio data which requires no X-Window command extensions. During recording, the command data stream to a display controller is intercepted, time stamped at regular intervals, and sent to and stored in a first file in a mass storage device. Cursor movement and operation data also is intercepted, time stamped and stored in a second file. During recording, display state data is generated and recorded into a third file at specified intervals. For playback, the system operator is presented with a graphic user interface resembling the control panel of a video cassette recorder. The system operator can play back the recorded information starting from a designated instant by operating the "buttons" on the control panel. For playback, the third file is read and forwarded to the display controller.

Abstract: A method for handling alarm conditions from paging stations in a paging system is disclosed. The paging system includes a paging terminal, a plurality of paging stations, and a network manager. When a paging station has an alarm condition, the paging station forwards the alarm to the network manager, which in turn, compares the alarm with an alarm record for that paging station and determines whether or not that alarm is a higher priority than the previous alarms received from the paging station. If so, the network manager transmits a signal to the paging terminal to page the technician responsible for servicing that particular paging station. The technician is paged and dispatched to the paging station for service.

Abstract: A method and a device for detecting execution efficiency of a CPU in computer system. The device includes an integrating circuit, an A/D converter, a microprocessor and a display, wherein the integrating circuit takes signals of M/IO# of the computer system bus and integrates the same. The A/D converter converts the signals into digital signals and the microprocessor receives the digital signals to calculate the execution efficiency of the CPU.

Abstract: An arrangement for selectively controlling the response time of a type II phase locked loop (PLL), especially one which includes a phase detector and an amplifier of a feedback type of integrator within an IC, comprises a controllable filter stage coupled in cascade with the amplifier. The controllable filter stage includes a filter section and a switching arrangement for selectively bypassing the filter section in response to a mode -determining control signal. In the described embodiment, the PLL controls the frequency of a local oscillator of a tuner and the second filter section has an amplitude versus frequency response for increasing the response time of the PLL during a fine tuning mode so that a demodulator can continue to operate properly during the fine tuning mode.

Abstract: A correction circuit for a cathode ray tube displaying images subject to distortions comprises: a multiplier for a first horizontal sine waveform and a vertical parabola waveform to define a correction signal, the vertical parabola having a zero value during vertical retrace; a summer for combining a second horizontal sine waveform with the correction waveform to define a composite correction signal, one of the second horizontal sine waveform and the correction signal being first inverted; and, a correction coil for the cathode ray tube receiving the composite correction signal and generating a dynamic magnetic field responsive to the composite correction signal for correcting a residual inner pincushion distortion and for correcting a horizontal linearity distortion imparted by the correction of the residual inner pincushion distortion.

Abstract: An adapter for performing bi-directional data transfers between a SCSI bus, which transfers data using a parallel format, and a serial transfer medium, which transfers data using a serial format and being connected to a serial device. The adapter bi-directionally transfers SCSI data between itself and the SCSI bus. In addition, the adapter bi-directionally converts between SCSI formatted data and serially formatted data. Furthermore, the adapter bi-directionally transfers serially formatted data between itself and the serial transfer medium.

Abstract: An analog vector processor and method for converting right and left mono and stereo audio input signals through a series of six amplifier blocks and two control blocks using a series of unique signal path connections. The six amplifier blocks are comprised of three dual-amplifiers, two spacial amplifiers, a four-amplifier integrated circuit that inverts and transposes the signal path thus putting the signals out-of-phase. The two control blocks are comprised of a new and unique signal mixer control block that selects a mono, stereo, spacial or binaural signal, and a level control block for dual tracking of the signals. The resultant output signals are of an altered sound field producing a binaural effect thus creating a three-dimensional sound experience. The input signals may be from any sound source or conducting medium.

Abstract: An apparatus for deciding DCT block classes in a DVCR includes a scanning section for scanning AC coefficients among coefficients of respective DCT blocks, an absolute-value getting section for taking absolute values of the AC coefficients, a maximum value detecting section for obtaining the maximum values of respective DCT blocks from outputs of the absolute-value getting section, a minimum value detecting section for obtaining the minimum values from the maximum values of the DCT blocks obtained by the maximum value detecting section, and a deciding section for comparing outputs of the minimum value detecting section as threshold values with outputs of maximum value detecting section to decide the classes with respect to the DCT blocks.

Abstract: A manufacturing system is disclosed which includes first and second control devices as well as a communication terminal which controls communication with the control devices. The communications terminal includes an interceptor module which receives information from the manufacturing device and provides this information to the first and second control devices.

Abstract: A satellite video receiver (12) for providing output signals to a television signal receiver (52) includes apparatus (10, 15, 16, 20, 45, 60, 65, 70) for operator selection of the modulator output channel frequency of the satellite receiver. The operator may select a modulator main channel, or an alternative manufacturer pre-set modulator default channel. In a first recovery mode, the operator may automatically replace an existing modulator channel with a manufacturer pre-set default channel, e.g., if a chosen main channel is forgotten. In another recovery mode, the operator may automatically re-establish a previously selected modulator main channel recalled from memory.

Abstract: An improved optical pickup apparatus for different discs which is capable of writing and reading a data onto discs having different writing densities and thicknesses by using one optical pickup apparatus and a liquid crystal deflector (LCD) or a Grating Polarizing Beam Splitter (GPBS). The apparatus includes an objective lens for focusing a beam onto optical discs each having different thicknesses, and a numerical aperture control means for selectively passing through a beam in accordance with the thickness of the optical discs, diffracting a portion of the beam, and controlling the numerical aperture of the objective lens.